[Brian] adores his GW Instek GPC-1850D power supply, but it’s annoyingly loud and disruptive to his audio projects. The thing works great, so he decided to regulate the fan’s speed based on ...

Maybe it's already sluggish and doesn't serve its purpose on a hot day, or it keeps making weird sounds that not even the WD-40 hack to silence a noisy ceiling fan can mute. But while a shiny new ...